Mitsubishi Electric MSC-07RV Service Manual

Mitsubishi Electric MSC-07RV Service Manual

Wireless / multi system / inverter controlled multi system type, split-type / heat pump air conditioners
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SPLIT-TYPE,AIR CONDITIONERS
SPLIT-TYPE,HEAT PUMP AIR CONDITIONERS

SERVICE MANUAL

Wireless type
Models
MSC-07RV -
MSC-09RV -
MSC-12RV -
MSC-07RV -
MSC-09RV -
MSC-12RV -
Multi system type
MSC-07RV -
MSC-09RV -
MSC-12RV -
Inverter controlled multi system type
MSC-07RV -
E1
MSC-09RV -
E1
MSC-12RV -
E1
NOTE: (Only MXZ-32RV -
This manual describes technical data of MSC
type indoor unit .
For other indoor unit refer to the service manuals
No. OB229 REVISED EDITION-A of correspond-
ing models.
E1
( WH )
E1
( WH )
( WH )
E1
E1
( WH )
E1
( WH )
E1
( WH )
E1
( WH )
E1
( WH )
E1
( WH )
)
E1
Revision:
• MUX-10/18/24RV -
• MXZ-18/32RV -
E1
• Noise criteria curves has been added.
• Performance data has been added.
• Specification has been partially modified.
• Refrigerant system diagram has been partially
modified.
• Please void OB227 REVISED EDITION-A
· MU-07RV -
· MU-09RV -
· MU-12RV -
· MUH-07RV -
· MUH-09RV -
· MUH-12RV -
· MUX-10RV -
· MUX-18RV -
· MUX-24RV -
· MXZ-18RV -
· MXZ-32RV -
CONTENTS
1. TECHNICAL CHANGES ····································2
2. PART NAMES AND FUNCTIONS······················4
3. INDOOR/OUTDOOR
CORRESPONDENCE TABLE ···························7
4. INDOOR UNITS COMBINATION ·······················8
5. SPECIFICATION···············································13
6. NOISE CRITERIA CURVES ···························· 19
7. OUTLINES AND DIMENSIONS ······················ 22
8. WIRING DIAGRAM ··········································28
9. REFRIGERANT SYSTEM DIAGRAM ··············35
10. PERFORMANCE CURVES ······························46
11. MICROPROCESSOR CONTROL···················102
12. SERVICE FUNCTIONS···································120
13. TROUBLESHOOTING····································122
14. DISASSEMBLY INSTRUCTIONS···················148
15. PARTS LIST····················································166
16. OPTIONAL PARTS·········································184
has been added.
E1
has been added.
No. OB227
REVISED EDITION-B
E1
E1
E1
E1
E1
E1
E1
E1
E1
E1
E1

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Summary of Contents for Mitsubishi Electric MSC-07RV

  • Page 1: Service Manual

    • Please void OB227 REVISED EDITION-A SPLIT-TYPE,AIR CONDITIONERS SPLIT-TYPE,HEAT PUMP AIR CONDITIONERS No. OB227 REVISED EDITION-B SERVICE MANUAL Wireless type Models MSC-07RV - · MU-07RV - ( WH ) MSC-09RV - · MU-09RV - ( WH ) MSC-12RV - · MU-12RV -...
  • Page 2: Technical Changes

    TECHNICAL CHANGES MS-07NV2 2 - MSH-07NV2 2 - MSC-07RV - MSX-05NV-- MS-09NV2 2 - MSH-09NV2 2 - MSC-09RV - MSX-09NV-- MS-12NV2 2 - MSH-12NV2 2 - MSC-12RV - MSX-12NV-- 1. Switch SW2 has added on the indoor electronic control P.C. board.
  • Page 3 1.Outdoor model name has changed. 2.Possibly connected indoor units combination was changed. (MSH-09NV(2) - MSC-09RV - (MSH-07NV(2) - + MSH-12NV(2) - MSC-07RV - + MSC-12RV - MXZ-32NV - MXZ-32RV - 1.Outdoor model name has changed. 2.Possibly connected indoor units were changed.
  • Page 4: Part Names And Functions

    PART NAMES AND FUNCTIONS INDOOR UNIT MSC-07RV - MSC-09RV - MSC-12RV - Grille Deodorizing filter Air inlet (gray sponge type) Air cleaning filter (white bellows type) Remote control Front panel receiving section Horizontal vane Air filter Vertical vanes Remote controller...
  • Page 5 OUTDOOR UNIT MUX-10RV- MUX-18RV- MUX-24RV- MXZ-18RV- Air inlet Air inlet (back and side) (back and side) Piping Drainage hose Piping Drainage hose Air outlet Air outlet Drain outlet Drain outlet MXZ-32RV- (back and side) Air inlet Model indication Air outlet...
  • Page 6 MU-07RV - WThe remote controller is packed with the outdoor unit (MU& MUH type). MU-09RV - MU-12RV - Signal transmitting section MUX-10RV - MUX-18RV - MUX-24RV - Operation display section CLOCK 6 00 1 1 00 OPERATE /STOP (ON /OFF)button ON/OFF COOL WARM...
  • Page 7: Table Of Contents

    INDOOR / OUTDOOR CORRESPONDENCE TABLE MXZ-18RV OUTDOOR UNIT MXZ-18RV- 09+09 07+12 MXZ-32RV OUTDOOR UNIT MXZ-32RV- 07+07+07 07+07+09 07+07+(12 or 13) 07+07+18 07+09+09 07+09+(12 or 13) 07+09+18 07+(12 or 13)+(12 or 13) 07+(12 or 13)+18 07+18+18 09+09+09 09+09+(12 or 13) 09+09+18 09+(12 or 13)+(12 or 13) 09+(12 or 13)+18 09+18+18...
  • Page 8: Indoor Units Combination

    INDOOR UNITS COMBINATION MXZ-18RV NOTE:Electrical data is for outdoor unit only. Outdoor unit Power Cooling capacity (kW) Current Indoor units factor power consumption combination Unit A Unit B Total (kW) 220V 240V 1.02 89 - 90 5.20 4.72 (1.6 - 2.8) (0.855 - 1.33) 1.05 89 - 90...
  • Page 9 MXZ-32RV NOTE: Electrical data is for outdoor unit only. Cooling capacity (kw) Outdoor unit Current Power Indoor units power consumption factor combination Total Unit A Unit B Unit C Unit D (kw) 220V 240V 1.00 5.05 4.63 (1.8-2.7) (0.96-1.14) 1.77 5.91 5.42 (1.8-3.2)
  • Page 10 NOTE: Electrical data is for outdoor unit only. Cooling capacity (kw) Outdoor unit Current Power Indoor units power consumption factor combination Total Unit A Unit B Unit C Unit D (kw) 220V 240V 3.23 09+09+09 2.67 2.67 2.67 16.31 14.92 (3.7-9.0) (1.30-3.96) 3.23...
  • Page 11 NOTE: Electrical data is for outdoor unit only. Heating capacity (kw) Outdoor unit Current Power Indoor units power consumption factor combination Total Unit A Unit B Unit C Unit D (kw) 220V 240V 1.20 6.06 5.55 (2.1-3.6) (0.91-1.28) 1.43 7.22 6.62 (2.1-4.2) (0.91-1.51)
  • Page 12 NOTE: Electrical data is for outdoor unit only. Heating capacity (kw) Outdoor unit Current Power Indoor units power consumption factor combination Total Unit A Unit B Unit C Unit D (kw) 220V 240V 2.78 14.04 12.87 09+09+09 (5.2-10.6) (1.19-2.96) 2.78 09+09+12(13) 2.65 2.65...
  • Page 13 SPECIFICATION Indoor model MSC-07RV - MSC-09RV - MSC-12RV - Function Cooling Cooling Cooling Single phase Single phase Single phase Indoor unit power supply 220-240V,50Hz 220-240V,50Hz 220-240V,50Hz Air flow (Hi) K /h Capacity Power outlet Running current 0.17 0.17 0.19 Power input Power factor 93.6-85.8...
  • Page 14 Indoor model MSC-07RV - MSC-09RV - MSC-12RV - Function Cooling Heating Cooling Heating Cooling Heating Indoor unit power supply Single phase Single phase Single phase 220-240V,50Hz 220-240V,50Hz 220-240V,50Hz Air flow(Hi) K /h Capacity Power outlet Running current 0.17 0.17 0.19...
  • Page 15 Indoor model MSC-07RV - MSC-09RV - Function Cooling Cooling Indoor unit power supply Single phase Single phase 220-240V,50Hz 220-240V,50Hz K /h Capacity Air flow(Hi) Power outlet Running current 0.17 0.17 Power input Power factor 94-86 94-86 Starting current — —...
  • Page 16 (Unit C ,D) (Unit A ,B) Indoor model MSC-09RV - MSC-12RV - Function Cooling Cooling Indoor unit power supply Single phase 220-240V,50Hz Single phase 220-240V,50Hz K /h Capacity Air flow(Hi) Power outlet Running current 0.17 0.19 Power input Power factor 94-86 96-88 Starting current...
  • Page 17 NOTE:Test conditions Cooling : Indoor DB27°C / WB19°C Heating : Indoor DB20°C Outdoor DB35°C / WB24°C Outdoor DB 7°C / WB 6°C Refer to the above specification when MSC-07RV - ,MSC-09RV- and MSC-12RV- is connected with MXZ-18RV- and MXZ-32RV- as inverter controlled multi system units.
  • Page 18 Outdoor model MXZ-18RV - MXZ-32RV - Single phase Single phase Outdoor unit power supply 220-240V,50Hz 220-240V,50Hz Indoor unit number 3 or 4 Cooling Heating Cooling Heating Function 4.5 (1.6~4.5) 5.8 (2.0~5.8) 8.0 (1.8~9.0) 9.3 (2.1~10.6) Capacity — — — — Dehumidification Outdoor air flow K /h...
  • Page 19: Noise Criteria Curves

    NOISE CRITERIA CURVES MSC-07/09RV MSC-12RV SPL(dB LINE NOTCH SPL(dB LINE NOTCH (220/240V) (220/240V) Test conditions. Test conditions. Cooling : DB27: WB19: Cooling : DB27: WB19: Heating : DB20: WB -: Heating : DB20: WB -: NC-70 NC-70 NC-60 NC-60 NC-50 NC-50 NC-40 NC-40...
  • Page 20: Tereshold Of

    MUH-07/09RV MUH-12RV SPL(dB LINE NOTCH SPL(dB LINE NOTCH (220/240V) (220/240V) Test conditions. Test conditions. Cooling :DB35: WB24: Cooling :DB35: WB24: Heating :DB 7: WB 6: Heating :DB 7: WB 6: NC-70 NC-70 NC-60 NC-60 NC-50 NC-50 NC-40 NC-40 NC-30 NC-30 APPROXIMATE APPROXIMATE TERESHOLD OF...
  • Page 21: Table Of Contents

    MUX-24RV SPL(dB LINE NOTCH (220/240V) Test conditions. Cooling :DB35: WB24: NC-70 NC-60 NC-50 NC-40 NC-30 APPROXIMATE TERESHOLD OF HEARING FOR NC-20 CONTINUOUS NOISE 1000 2000 4000 8000 BAND CENTER FREQUENCIES, Hz MXZ-18RV MXZ-32RV SPL(dB LINE SPL(dB LINE NOTCH NOTCH COOL COOL(220V) HEAT COOL(240V)
  • Page 22: Outlines And Dimensions

    OUTLINES AND DIMENSIONS Unit: mm MSC-07RV - MSC-09RV - Installation plate INDOOR UNIT Indoor unit 81.5 116.5 Wall hole [65 Installation plate Liquid line [6.35-0.5m Gas line [9.52-0.43m Air in Insulation [37 O.D [21 I.D Drain hose [16 (Connected part O.D) 17.5...
  • Page 23 Unit: mm MU-07RV - MUH-07RV - REQUIRED SPACE MU-09RV - MUH-09RV - MU-12RV - MUH-12RV - OUTDOOR UNIT Outdoor unit Air in Air in Drainage 3holes [33 Air out Service panel Liquid refrigerant pipe joint Refrigerant pipe (flared) [6.35 Gas refrigerant pipe joint Refrigerant pipe (flared) [9.52 (MU-07/09RV )
  • Page 24 Unit: mm REQUIRED SPACE OUTDOOR UNIT Unless any obstacle Unless any obstacle exists in front ,right exists in front MUX10RV- and left sides. Air in Drainage 4 hole [16.2 Air in Unit A Air out Wiring hole Unless any obstacle Rear side exists in right , left and rear sides.
  • Page 25 Unit: mm OUTDOOR UNIT MUX-24RV- 2-U-Shape noched hols (Base bolt M10) Air in Air in 2-Oval hols(12Å~36) (Base bolt M10) Air out Handle for moving 72.2 58.2 Handle for moving Wiring hole Liquid pipe (flared É”6.35) Gus pipe (flared É”12.7) Gus pipe (flared É”9.52) 264.2...
  • Page 26 Necessary surrounding clearance Leave overhead Air in clearance fully Necessary surrounding clear- ance for concentrated installa- Leave front clearance fully Leave overhead clearance fully tion. Air in Air out Space for servicing Max. 10 units 1000 Outlet guide Side Handle for mounting hole air-intake monving...
  • Page 27 1.Installation space More than Rubber cushion Veranda Base More than More than Note : Leave front and both sides Note : Leave front and overhead Note : Leave front, overhead and clearance fully. clearance fully. both clearance fully. 2.Service space 2-U-shape notched holes (Base bolt M10) Air in...
  • Page 28: Wiring Diagram

    WIRING DIAGRAM MSC-07RV - MSC-09RV - MSC-12RV - MODELS WIRING DIAGRAM INDOOR UNIT TO OUTDOOR UNIT TAB12 RT12 CONNECTING HIC1 CN201 RT11 MUH OR MXZ TYPE NR11 CN202 MU OR TRANS MUX TYPE SR141 CN211 LD101T POWER ELECTRONIC CONTROL P.C. BOARD...
  • Page 29 MU-07RV - MU-09RV - MU-12RV - MODELS WIRING DIAGRAM OUTDOOR UNIT FROM INDOOR UNIT CONNECTING DSAR CIRCUIT BREAKER NO COM POWER SUPPLY 220-240V 50Hz GRN/YLW SYMBOL NAME SYMBOL NAME SYMBOL NAME FUSE(2A) TERMINAL BLOCK COMPRESSOR CAPACITOR TB1,TB2 COMPRESSOR(INNER THERMOSTAT) CONTACTOR OUTDOOR FAN CAPACITOR OUTDOOR FAN MOTOR(INNER THERMOSTAT) DSAR...
  • Page 30 MODEL MUX-10RV- OUTDOOR UNIT 52C2 1 51C POWER SUPPLY ~ / N 220-240V 52C1 50Hz CIRCUIT BREAKER 52C2 52C1 FROM INDOOR UNIT No.A CONNECTING 21R1 FROM INDOOR 21R2 UNIT No.B CONNECTING NAME SYMBOL SYMBOL NAME SYMBOL NAME COMPRESSOR CAPACITOR TB1,TB2,TB3 TERMINAL BLOCK OVERCURRENT RELAY OUTDOOR FAN CAPACITOR...
  • Page 31 MODEL MUX-18RV- OUTDOOR UNIT POWER SUPPLY 52CA ~ / N 220-240V GRY F13 50Hz CIRCUIT BREAKER 51C1 GRN/YLW FROM INDOOR 52C2 UNIT No.A 52CA CONNECTING 21R2 51C2 FROM INDOOR 52C1 UNIT No.B CONNECTING 21R1 52C2 FROM INDOOR UNIT No.C 52C1 CONNECTING SYMBOL NAME...
  • Page 32 OUTDOOR UNIT MODEL MUX-24RV- 52C1 POWER SUPPLY TB10 52C2 220-240V 50Hz 52C4 52C3 CIRCUIT BREAKER GRN/YLW 21RA 21R1 FROM INDOOR UNIT No.A 52C1 CONNECTING 21R2 FROM INDOOR UNIT No.B 52C2 CONNECTING 21R3 FROM INDOOR UNIT No.C 52C3 CONNECTING 21R4 FROM INDOOR UNIT No.D 21RB 52C4...
  • Page 33: Noise

    GRN/YLW NF62 NF61 POWER SUPPLY DS63 220-240V ~ / N 50Hz CIRCUIT BREAKER FROM INDOOR LD71 LD73 INDOOR UNIT (B) LD74 UNIT CONNECTING LD72 LD77 21S4 INDOOR UNIT (A) DS61 TAB91 CN621 CN61 4 3 2 1 2 3 4 5 CN801 CN731 CN63...
  • Page 34 DS62 DS61 REDR NOISE FILTER P.C.BOARD GRN/YLW POWER SUPPLY 63H2 ~/N 220-240V 50Hz LD62 LD61 F911 RELAY P.C. BOARD CIRCUIT BRAKER T801 TAB64 CN913 CN912 CN720 CN901 CN902 TAB65 INDOOR UNIT CT62 GRN/YLW 1 2 3 4 5 6 INDOOR TAB66 UNIT 21S4...
  • Page 35: Refrigerant System Diagram

    REFRIGERANT SYSTEM DIAGRAM Unit:mm MU-07RV - MSC-07RV - MU-09RV - MSC-09RV - INDOOR UNIT OUTDOOR UNIT Refrigerant pipe [9.52 (Option) Stop valve (with heat insulator) (with service port) Indoor Indoor coil heat thermistor Outdoor exchanger RT12 heat Flared connection exchanger...
  • Page 36 Unit:mm MSC-07RV - MUH-07RV - MSC-09RV - MUH-09RV - INDOOR UNIT OUTDOOR UNIT Refrigerant pipe [ 9.52 Reversing valve (Option) (with heat insulator) Muffler Indoor coil Defrost Indoor Stop valve thermistor thermistor Outdoor heat (with service RT12 RT61 heat exchanger...
  • Page 37 MAX. REFRIGERANT PIPING LENGTH Refrigerant piping Piping size O.D : mm Length of connecting pipe : m Models Max. length : m Liquid Indoor unit Outdoor unit MSC-07RV - MU-07RV - Gas 0.43 Gas 0 9.52 MSC-09RV - 6.35 MU-09RV - Liquid 0 Liquid 0.5...
  • Page 38 Unit : mm MSC-07RV- MUX-10RV- INDOOR UNIT OUTDOOR UNIT Refrigerant pipe Room 9.52 (3/8) temperature (option) thermistor Solenoid valve (With insulation) RT11 Capillary tube Indoor Stop valve heat 1.6 x 1,000 with service port UNIT A exchanger Flared connection Refrigerant pipe...
  • Page 39 Unit : mm MSC-09RV- MUX-18RV- INDOOR UNIT OUTDOOR UNIT Refrigerant pipe Room 9.52<3/8> temperature (option) thermistor (With insulation) RT11 Indoor Stop valve heat with service port UNIT A exchanger MSC-09RV Flared connection Indoor coil Compressor(A) Stop valve thermistor RT12 Capillary tube Refrigerant pipe 6.35<1/4>...
  • Page 40 MSX-18RV- MAX.REFRIGERANT PIPING LENGTH & MAX. HEIGHT DIFFERENCE Indoor unit C Indoor unit A Indoor unit B MSC-09RV - E1 MSC-09RV - E1 MSC-09RV - E1 Outdoor unit MUX-18RV - E1 UNIT No. Pipe length Height difference (H) No. of bends Max.
  • Page 41 Unit : mm MSC-09RV- MUX-24RV- MSC-12RV- INDOOR UNIT OUTDOOR UNIT Refrigerant pipe Room {12.7 (1/2) temperature (option) thermistor Solenoid valve (With insulation) RT11 21RA Capillary tube Indoor Stop valve heat 1.6 x 1,000 with service port UNIT A exchanger MSC-12RV- E1 Flared connection Refrigerant pipe Solenoid valve...
  • Page 42 MSX-24RV- MAX.REFRIGERANT PIPING LENGTH & MAX. HEIGHT DIFFERENCE Indoor unit A Indoor unit B Indoor unit C Indoor unit D MSC-12RV- E1 MSC-12RV- E1 MSC-09RV- E1 MSC-09RV- E1 Outdoor unit MUX-24RV- E1 UNIT No. Pipe length Height difference (H) No. of bends Total Total Max.
  • Page 43 MXZ-18RV - Unit:mm Refrigerant flow in cooling Refrigerant flow in heating Service Compressor port (Low pressure) Discharge temperature Reversing valve coil thermistor heating ON RT62 cooling OFF Muffler High pressure switch Accumlator Service port (high pressure) Reversing valve Ball valve with Gas pipe service port thermistor...
  • Page 44 MAX REFRIGERANT PIPING LENGTH MXZ-18RV - Outodoor unit Piping length for each indoor unit (a,b) Total piping length (a+b) Height difference between units (H) Bending point for each unit Total bending point It does not matter which unit is higher MXZ-32RV - Indoor units...
  • Page 45 PIPE SIZE SELECTION MXZ-18RV - Refrigerant pipe diameter is different according to indoor unit to be connected. When using extension pipes, refer to the table below. When diameter of refrigerant pipe is different from that of outdoor unit union, use optional L-joint. For further information on L-joint, see page BACK COVER.
  • Page 46: Performance Curves

    PERFORMANCE CURVES MUH-07RV - MU-07RV - MSC-07RV - MUH-09RV - MU-09RV - MSC-09RV - MUH-12RV - MU-12RV - MSC-12RV - The standard data contained in these specifications apply only to the operation of the air conditioner under normal conditions, since operating conditions vary according to the areas where these units are installed. The following information has been pro- vided to clarify the operating characteristics of the air conditioner under the conditions indicated by the performance curve.
  • Page 47 10.2 11.2 10.2 19.5 24.1 24.4 22.3 22.6 18.0 16.5 20.4 20.7 15.0 18.6 18.8 16.7 13.5 16.9 14.9 12.0 15.0 10.5 13.0 13.2 11.1 11.3 NOTE:The above curves are for the heating operation without any frost. 10-1-2.OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT COOL operation Both indoor and outdoor unit are under the same temperature/humidity condition.
  • Page 48 MU-09RV - MU-09RV - (kgf/F•G)(MPa•G) 220V 240V 220V/240V 18 20 30 32 35(:) 35(:) 70(%) 70(%) Ambient temperature(˚C) Ambient temperature(˚C) Ambient humidity(%) Ambient humidity(%) MU-12RV - MU-12RV - (kgf/F•G)(MPa•G) 240V 220V/240V 220V 35(:) 35(:) 70(%) 70(%) Ambient temperature(˚C) Ambient temperature(˚C) Ambient humidity(%) Ambient humidity(%) (kgf/F•G)(MPa•G)
  • Page 49 MUH-12RV - MUH-12RV - (kgf/F•G)(MPa•G) 220V/240V 220V/240V 30 32 35(:) 70(%) 70(%) Ambient temperature(˚C) Ambient temperature(˚C) Ambient humidity(%) Ambient humidity(%) HEAT operation Condition indoor:Dry bulb temperature 20.0°C Outdoor:Dry bulb temperature 7,15,20°C Wet bulb temperature 14.5°C Wet bulb temperature 6,12,14.5°C MUH-09RV - MUH-07RV - 220V 220V...
  • Page 50: Cool

    MSC-07RV - MUX-10RV - MSC-09RV - MUX-18RV - MSC-12RV - MUX-24RV - 10-2-1.CAPACITY AND THE INPUT CURVES (ONE INDOOR UNIT WITH ONE OUTDOOR UNIT) 10.7 11.6 10.6 10-2-2.OUTDOOR LOW PRESSURE AND OUTDOOR UNIT CURRENT COOL operation Both indoor and outdoor unit are under same temperature/humidity condition.
  • Page 51 MUX-24RV- Single operation (Unit C or D) Single operation (Unit A or B) (kgf/F•G)(MPa•G) (kgf/F•G)(MPa•G) 240V 220V 220V/240V Multiple operation (Unit A+B) Multiple operation (Unit C+D) (kgf/F•G)(MPa•G) (kgf/F•G)(MPa•G) 240V 220V 220V/240V...
  • Page 52 MSC-07RV - MXZ-18RV - MSC-09RV - MXZ-32RV - MSC-12RV - 10-3-1.Capacity and input correction by inverter output frequency (OUTDOOR UNIT:MXZ-18RV) NOTE 1 : Inverter output frequency : COOL 58Hz,HEAT 58Hz NOTE 2 : The dotted line on graphs connects the frequency range in normal operation shown by the full line and the frequency in test run shown by the point.
  • Page 53 10-3-.2.Capacity and input correction by inverter output frequency (OUTDOOR UNIT:MXZ-32RV) NOTE 1 : Inverter output frequency : COOL 58Hz,HEAT 40Hz NOTE 2 : The dotted line on graphs connects the frequency range in normal operation shown by the full line and the frequency in test run shown by the point.
  • Page 54 10-3-3.Outdoor low pressure and outdoor unit current 1.07-class unit in single operation(OUTDOOR UNIT : MXZ-18RV) NOTE:The unit of pressure has been changed to MPa on the international system of units(SI unit system). The converted score against the traditional unit system can be gotten according to the formula below. 1(MPa •...
  • Page 55 2.09-class unit in single operation (OUTDOOR UNIT : MXZ-18RV) NOTE:The unit of pressure has been changed to MPa on the international system of units(SI unit system). The converted score against the traditional unit system can be gotten according to the formula below. 1(MPa •...
  • Page 56 3. 12-class unit in single operation (OUTDOOR UNIT : MXZ-18RV) NOTE:The unit of pressure has been changed to MPa on the international system of units(SI unit system). The converted score against the traditional unit system can be gotten according to the formula below. 1(MPa •...
  • Page 57 10-3-4.Outdoor low pressure and outdoor unit current 1. 07-class unit in single operation (OUTDOOR UNIT : MXZ-32RV) NOTO:The unit of pressure has been changed to MPa on the international system of units(SI unit system). The converted score against the traditional unit system can be gotten according to the formula below. 1(MPa •...
  • Page 58 2. 09-class unit in single operation (OUTDOOR UNIT : MXZ-32RV) NOTO:The unit of pressure has been changed to MPa on the international system of units(SI unit system). The converted score against the traditional unit system can be gotten according to the formula below. 1(MPa •...
  • Page 59 3. 12(13)-class unit in single operation (OUTDOOR UNIT : MXZ-32RV) NOTO:The unit of pressure has been changed to MPa on the international system of units(SI unit system). The converted score against the traditional unit system can be gotten according to the formula below. 1(MPa •...
  • Page 60 4. 18-class unit in single operation NOTO:The unit of pressure has been changed to MPa on the international system of units(SI unit system). The converted score against the traditional unit system can be gotten according to the formula below. 1(MPa • G) =10.2(kgf/f f •...
  • Page 61 PERFORMANCE DATA COOL operation (220V) MSC-07RV - : MU-07RV - CAPACITY : 2.2 kW INPUT : 680 W SHF : 0.74 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.59 1.45 0.56 2.48 1.39 0.56...
  • Page 62 PERFORMANCE DATA COOL operation (220V) MSC-07RV - : MU-07RV - CAPACITY : 2.2 kW INPUT : 680 W SHF : 0.74 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.16 1.21 0.56 1.98 1.11 0.56 1.90 1.07 0.56...
  • Page 63 PERFORMANCE DATA COOL operation (240V) MSC-07RV - : MU-07RV - CAPACITY : 2.2 kW INPUT : 710 W SHF : 0.74 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.59 1.45 0.56 2.48 1.39 0.56...
  • Page 64 PERFORMANCE DATA COOL operation (240V) MSC-07RV - : MU-07RV - CAPACITY : 2.2 kW INPUT : 710 W SHF : 0.74 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.16 1.21 0.56 1.98 1.11 0.56 1.90 1.07 0.56...
  • Page 65 PERFORMANCE DATA COOL operation (220V) MSC-09RV - : MU-09RV - CAPACITY : 2.5 kW INPUT : 780 W SHF : 0.7 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.94 1.53 0.52 2.81 1.46 0.52 2.70 1.40 0.52 2.60 1.35 0.52...
  • Page 66 PERFORMANCE DATA COOL operation (220V) MSC-09RV - : MU-09RV - CAPACITY : 2.5 kW INPUT : 780 W SHF : 0.7 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.45 1.27 0.52 2.25 1.17 0.52 2.16 1.12 0.52 2.58 1.03 0.40 2.40 0.96 0.40...
  • Page 67 PERFORMANCE DATA COOL operation (240V) MSC-09RV - : MU-09RV - CAPACITY : 2.5 kW INPUT : 810 W SHF : 0.7 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.94 1.53 0.52 2.81 1.46 0.52 2.70 1.40 0.52 2.60 1.35 0.52...
  • Page 68 PERFORMANCE DATA COOL operation (240V) MSC-09RV - : MU-09RV - CAPACITY : 2.5 kW INPUT : 810 W SHF : 0.7 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.45 1.27 0.52 2.25 1.17 0.52 2.16 1.12 0.52 2.58 1.03 0.40 2.40 0.96 0.40...
  • Page 69 PERFORMANCE DATA COOL operation (220V) MSC-12RV - : MU-12RV - CAPACITY : 3.5 kW INPUT : 1310 W SHF : 0.67 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 4.11 2.02 0.49 1048 3.94 1.93 0.49 1100...
  • Page 70 PERFORMANCE DATA COOL operation (220V) MSC-12RV - : MU-12RV - CAPACITY : 3.5 kW INPUT : 1310 W SHF : 0.67 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 3.43 1.68 0.49 1284 3.15 1.54 0.49 1362 3.03 1.48 0.49...
  • Page 71 PERFORMANCE DATA COOL operation (240V) MSC-12RV - : MU-12RV - CAPACITY : 3.5 kW INPUT : 1390 W SHF : 0.67 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 4.11 2.02 0.49 1112 3.94 1.93 0.49 1168...
  • Page 72 PERFORMANCE DATA COOL operation (240V) MSC-12RV - : MU-12RV - CAPACITY : 3.5 kW INPUT : 1390 W SHF : 0.67 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 3.43 1.68 0.49 1362 3.15 1.54 0.49 1446 3.03 1.48 0.49...
  • Page 73 PERFORMANCE DATA COOL operation (220V) MSC-07RV - : MUH-07RV - CAPACITY : 2.2 kW INPUT : 710 W SHF : 0.74 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.59 1.45 0.56 2.48 1.39 0.56...
  • Page 74 PERFORMANCE DATA COOL operation (220V) MSC-07RV - : MUH-07RV - CAPACITY : 2.2 kW INPUT : 710 W SHF : 0.74 OUTDOOR DB(;) INDOOR INDOOR SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT DB(;) WB(;) 2.16 1.21 0.56 1.98 1.11 0.56 1.90 1.07 0.56...
  • Page 75 PERFORMANCE DATA COOL operation (240V) MSC-07RV - : MUH-07RV - CAPACITY : 2.2 kW INPUT : 750 W SHF : 0.74 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.59 1.45 0.56 2.48 1.39 0.56...
  • Page 76 PERFORMANCE DATA COOL operation (240V) MSC-07RV - : MUH-07RV - CAPACITY : 2.2 kW INPUT : 750 W SHF : 0.74 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.16 1.21 0.56 1.98 1.11 0.56 1.90 1.07 0.56...
  • Page 77 PERFORMANCE DATA COOL operation (220V) MSC-09RV - : MUH-09RV - CAPACITY : 2.5 kW INPUT : 880 W SHF : 0.7 OUTDOOR DB(;) INDOOR INDOOR SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT DB(;) WB(;) 2.94 1.53 0.52 2.81 1.46 0.52 2.70 1.40 0.52 2.60 1.35 0.52...
  • Page 78 PERFORMANCE DATA COOL operation (220V) MSC-09RV - : MUH-09RV - CAPACITY : 2.5 kW INPUT : 880 W SHF : 0.7 OUTDOOR DB(;) INDOOR INDOOR SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT DB(;) WB(;) 2.45 1.27 0.52 2.25 1.17 0.52 2.16 1.12 0.52 2.58 1.03 0.40 2.40 0.96 0.40...
  • Page 79 PERFORMANCE DATA COOL operation (240V) MSC-09RV - : MUH-09RV - CAPACITY : 2.5 kW INPUT : 920 W SHF : 0.7 OUTDOOR DB(;) INDOOR INDOOR SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT DB(;) WB(;) 2.94 1.53 0.52 2.81 1.46 0.52 2.70 1.40 0.52 2.60 1.35 0.52...
  • Page 80 PERFORMANCE DATA COOL operation (240V) MSC-09RV - : MUH-09RV - CAPACITY : 2.5 kW INPUT : 920 W SHF : 0.7 OUTDOOR DB(;) INDOOR INDOOR SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT DB(;) WB(;) 2.45 1.27 0.52 2.25 1.17 0.52 2.16 1.12 0.52 2.58 1.03 0.40 2.40 0.96 0.40...
  • Page 81 PERFORMANCE DATA COOL operation (220V) MSC-12RV - : MUH-12RV - CAPACITY : 3.4 kW INPUT : 1220 W SHF : 0.67 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 4.00 1.96 0.49 3.83 1.87 0.49 1025 3.67 1.80 0.49...
  • Page 82 PERFORMANCE DATA COOL operation (220V) MSC-12RV - : MUH-12RV - CAPACITY : 3.4 kW INPUT : 1220 W SHF : 0.67 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 3.33 1.63 0.49 1196 3.06 1.50 0.49 1269 2.94 1.44 0.49...
  • Page 83 PERFORMANCE DATA COOL operation (240V) MSC-12RV - : MUH-12RV - CAPACITY : 3.4 kW INPUT : 1300 W SHF : 0.67 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 4.00 1.96 0.49 1040 3.83 1.87 0.49 1092...
  • Page 84 PERFORMANCE DATA COOL operation (240V) MSC-12RV - : MUH-12RV - CAPACITY : 3.4 kW INPUT : 1300 W SHF : 0.67 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 3.33 1.63 0.49 1274 3.06 1.50 0.49 1352 2.94 1.44 0.49...
  • Page 85 PERFORMANCE DATA HEAT operation (220V) MSC-07RV - : MUH-07RV - CAPACITY : 2.5 kW INPUT : 680 W OUTDOOR DB(;) INDOOR INPUT INPUT INPUT INPUT INPUT INPUT INPUT DB(;) 1.58 1.90 2.23 2.55 2.88 3.18 3.50 1.50 1.80 2.13 2.43 2.75...
  • Page 86 PERFORMANCE DATA COOL operation (220V) MSC-07RV - (Single) MUX-10RV - CAPACITY : 2.2 kW INPUT(Total=Indoor+Outdoor) : 740 W SHF : 0.74 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.59 1.45 0.56 2.48 1.39 0.56...
  • Page 87 PERFORMANCE DATA COOL operation (220V) MSC-07RV - (Single) MUX-10RV - CAPACITY : 2.2 kW INPUT(Total=Indoor+Outdoor) : 740 W SHF : 0.74 OUTDOOR DB(;) INDOO INDOO DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.16 1.21 0.56 1.98 1.11 0.56 1.90 1.07 0.56...
  • Page 88 PERFORMANCE DATA COOL operation (240V) MSC-07RV - (Single) MUX-10RV - CAPACITY : 2.2 kW INPUT(Total=Indoor+Outdoor) : 790 W SHF : 0.74 OUTDOOR DB(;) INDOO INDOO DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.59 1.45 0.56 2.48 1.39 0.56...
  • Page 89 PERFORMANCE DATA COOL operation (240V) MSC-07RV - (Single) :MUX-10RV - CAPACITY : 2.2 kW INPUT(Total=Indoor+Outdoor) : 790 W SHF : 0.74 OUTDOOR DB(;) INDOO INDOO DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.16 1.21 0.56 1.98 1.11 0.56 1.90 1.07 0.56...
  • Page 90 PERFORMANCE DATA COOL operation (220V) MSC-09RV - (Single) MUX-18RV - CAPACITY : 2.3 kW INPUT(Total=Indoor+Outdoor) : 790 W SHF : 0.73 OUTDOOR DB(;) INDOO INDOO SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT DB(;) WB(;) 2.70 1.49 0.55 2.59 1.42 0.55 2.48 1.37 0.55 2.39 1.32 0.55...
  • Page 91 PERFORMANCE DATA COOL operation (220V) MSC-09RV - (Single) MUX-18RV - CAPACITY : 2.3 kW INPUT(Total=Indoor+Outdoor) : 790 W SHF : 0.73 OUTDOOR DB(;) INDOO INDOO DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.25 1.24 0.55 2.07 1.14 0.55 1.99 1.09 0.55 2.13 0.91 0.43 2.37 1.02 0.43...
  • Page 92 PERFORMANCE DATA COOL operation (240V) MSC-09RV - (Single) MUX-18RV - CAPACITY : 2.3 kW INPUT(Total=Indoor+Outdoor) : 830 W SHF : 0.73 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.70 1.49 0.55 2.59 1.42 0.55 2.48 1.37 0.55 2.39 1.32 0.55...
  • Page 93 PERFORMANCE DATA COOL operation (240V) MSC-09RV - (Single) MUX-18RV - CAPACITY : 2.3 kW INPUT(Total=Indoor+Outdoor) : 830 W SHF : 0.73 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.25 1.24 0.55 2.07 1.14 0.55 1.99 1.09 0.55 2.37 1.02 0.43 2.21 0.95 0.43...
  • Page 94 PERFORMANCE DATA COOL operation (220V) MSC-09RV - (Single) MUX-24RV - CAPACITY : 2.6 kW INPUT(Total=Indoor+Outdoor) : 975 W SHF : 0.69 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 3.06 1.56 0.51 2.93 1.49 0.51 2.81 1.43 0.51 2.70 1.38 0.51...
  • Page 95 PERFORMANCE DATA COOL operation (220V) MSC-09RV - (Single) MUX-24RV - CAPACITY : 2.6 kW INPUT(Total=Indoor+Outdoor) : 975 W SHF : 0.69 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.55 1.30 0.51 2.34 1.19 0.51 1014 2.25 1.15 0.51 1034...
  • Page 96 PERFORMANCE DATA COOL operation (240V) MSC-09RV - (Single) MUX-24RV - CAPACITY : 2.6 kW INPUT(Total=Indoor+Outdoor) : 1015 W SHF : 0.69 OUTDOOR DB(;) INDOOR INDOOR SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT DB(;) WB(;) 3.06 1.56 0.51 2.93 1.49 0.51 2.81 1.43 0.51 2.70 1.38 0.51...
  • Page 97 PERFORMANCE DATA COOL operation (240V) MSC-09RV - (Single) MUX-24RV - CAPACITY : 2.6 kW INPUT(Total=Indoor+Outdoor) : 1015 W SHF : 0.69 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 2.55 1.30 0.51 2.34 1.19 0.51 1056 2.25 1.15 0.51 1076...
  • Page 98 PERFORMANCE DATA COOL operation (220V) MSC-12RV - (Single) MUX-24RV - CAPACITY : 3.4 kW INPUT(Total=Indoor+Outdoor) : 1355 W SHF : 0.67 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 4.00 1.96 0.49 1084 3.83 1.87 0.49 1138...
  • Page 99 PERFORMANCE DATA COOL operation (220V) MSC-12RV - (Single) MUX-24RV - CAPACITY : 3.4 kW INPUT(Total=Indoor+Outdoor) : 1355 W SHF : 0.67 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 3.33 1.63 0.49 1328 3.06 1.50 0.49 1409 2.94 1.44 0.49...
  • Page 100 PERFORMANCE DATA COOL operation (240V) MSC-12RV - (Single) MUX-24RV - CAPACITY : 3.4 kW INPUT(Total=Indoor+Outdoor) : 1415 W SHF : 0.67 OUTDOOR DB(;) INDOOR INDOOR DB(;) WB(;) SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT 4.00 1.96 0.49 1132 3.83 1.87 0.49 1189...
  • Page 101 PERFORMANCE DATA COOL operation (240V) MSC-12RV - (Single) MUX-24RV - CAPACITY : 3.4 kW INPUT(Total=Indoor+Outdoor) : 1415 W SHF : 0.67 INDOOR INDOOR SHC SHF INPUT SHC SHF INPUT SHC SHF INPUT DB(;) WB(;) 3.33 1.63 0.49 1387 3.06 1.50 0.49 1472 2.94 1.44 0.49 1500...
  • Page 102: Microprocessor Control

    MICROPROCESSOR CONTROL W W MXZ-18RV - MUH-07RV - MUX-10RV - MU-07RV - MSC-07RV - W W MXZ-32RV - MUH-09RV - MUX-18RV - MU-09RV - MSC-09RV - MUH-12RV - MUX-24RV - MU-12RV - MSC-12RV - W Refer to page 112~119 for the inverter multi system control of of this outdoor unit.
  • Page 103 11-1. COOL ( ) OPERATION (1) Press OPERATE/STOP(ON/OFF) button.Operation indicator lamp of the indoor unit turns on with a beep tone. (2) Select COOL mode with the OPERATION SELECT button. (3) Press TEMPERATURE buttons (TOO WARM or TOO COOL button)to select the desired temperature. The setting range is 16 ~ 31°C 1.
  • Page 104 The system for dry operation uses the same refrigerant circuit as the cooling circuit. The compressor and the indoor fan are controlled by the room temperature. 1. Indoor fan speed control Indoor fan operates at the set speed by FAN SPEED CONTROL button . In Auto fan speed becomes Lo.
  • Page 105 (2) Cold air prevention control 1 When the compressor is not operating, (1) if the temperature of indoor coil thermistor RT12 is 18°C or less, the fan stops. (2) if the temperature of indoor coil thermistor RT12 is more than 18°C, the fan operates at VLo. 2 When the compressor is operating, (1) if the temperature of RT12 is 22°C or more, the fan operates at set speed.
  • Page 106 3. Defrosting <MUH-07/09/12RV> (Refer to page 118 for MXZ-18/32RV) Defrosting of outdoor heat exchanger is controlled by DEICER P.C. board, with detection by the defrost thermistor RT61. (1) Starting conditions of defrost When all conditions of a) ~ c) are satisfied, the defrosting operation starts. a) The compressor cumulative operation time exceeds 40 minutes without the defrosting operation working.
  • Page 107 4. Reversing valve control <MUH-07/09/12RV> Heating · · · · · ON Cooling · · · · · OFF Dry · · · · · · · · OFF When operation starts, the reversing valve reverses for 5 seconds right before start-up of the compressor. Operation time chart (HEAT) (COOL / DRY)
  • Page 108 (4) The initial set temperature is decided by the initial room temperature. Initial room temperature Mode Initial set temperature MU & MUX type MUH & MXZ type 26: or more 26: or more COOL mode of "I FEEL CONTROL" Initial room temperature 25: or more, 25: or more, less than 26:...
  • Page 109 11-6. FAN MOTOR CONTROL (1) Rotational frequency feedback control The indoor fan motor is equipped with a rotational frequency sensor, and outputs signal to the microprocessor to feedback the rotational frequency. Comparing the current rotational frequency with the target rotational frequency (Hi,Me,Lo), the microprocessor controls SR141and adjusts fan motor electric current to make the current rotational frequency close to the target rotational frequency.
  • Page 110 < > (7) Cold air prevention in HEAT operation MUH-07/09/12RV,MXZ-18/32RV When any of the following conditions occurs in HEAT operation, the horizontal vane angle changes to Angle 1 automat- ically to prevent cold air blowing on users. Compressor is not operating. Defrosting is performed.
  • Page 111 (4) Press HR. and MIN. button to set the timer. Time setting is 10-minute units. HR. and MIN. button will work when “ ” or “ ” mark is flashing. These marks disappear in 1 minute. After setting the ON timer, check that Operation indicator lamp of the indoor unit lights. NOTE1 : Be sure to place the remote controller at the position where its signal can reach the air conditioner even during TIMER operation, or the set time may deviate within the range of about 10 minutes.
  • Page 112 11-10.INVERTER MULTI SYSTEM CONTROL 11-10.1.System organization MXZ-18RV - <Electronic controls> Compressor Compressor primary Indoor unit A secondary current current Indoor unit B Outdoor unit microprocessor Drive circuit Transistor module temperature thermistor RT63 Compressor Discharge Room A temperature Gas pipe thermistor High temperature RT62...
  • Page 113 MXZ-32RV - Compressor Compressor Power secondary primary factor current current Indoor unit microprocessor Outdoor unit control microprocessor Drive circuit Transistor module Fin temperature thermistor RT63 Crankcase heater L.P.S Accumulator Comp. Suction Inner thermostat x 61 temperature x 62 thermistor RT65 x 63 H.P.S Discharge...
  • Page 114: Lev Control

    11-10.2.LEV control Linear expansion valve (LEV) is controlled by "Thermostat ON" commands given from each unit. LEV opening Indoor unit status MXZ-18RV MXZ-32RV All indoor units OFF 500 pulse Before shutdown 350 pulse COOL : 5 pulse COOL : 5 pulse Non-opening indoor unit HEAT : 49 pulse HEAT : 59 pulse...
  • Page 115 1 LEV opening correction by suction super heat (Suction super heat) = (Suction temperature) - (Evaporation temperature) The LEV opening is corrected as shown in the following table. LEV opening correction (pulse) Suction superheat (S.H.) MXZ-18RV- MXZ-32RV- Cooling Heating Cooling Heating more than 10 8 to10...
  • Page 116 11-10.3.Control by the number of operating indoor unit The compressor operational frequency and the LEV opening are controlled depending on the number of operating indoor units. 1.Compressor operational frequency • The variable range of compressor operational frequency changes according to the operation signal (capacity code and temperature difference) given from the operating indoor unit (s).
  • Page 117 11-10.6.Operational frequency range Compressor operational frequency range (1) COOLING MXZ-18RV- Number of Indoor unit Minimum Maximum DRY mode Rating operating unit capacity class 07 or 09 07+12 09+09 MXZ-32RV- Number of Total capacity Minimum Maximum DRY mode Rating operating unit code (2) HEATING MXZ-18RV-...
  • Page 118 11-10.7.Defrosting in heating <Conditions to start defrosting> The system starts defrosting when it satisfies both of the following conditions : The defrost thermistor detects -3°C or below. Defrost interval (I. e. the accumulated compressor operation time) counted by the controller board has reached the prescribed value.
  • Page 119 11-10.9.Discharge temperature protection • The compressor ON/OFF and operational frequency are controlled according to the discharge temperature. (1) Compressor ON/OFF The compressor turns OFF when the discharge temperature thermistor rises above 120°C. The compressor turns ON when the discharge temperature thermistor falls below 80°C. (2) Compressor operational frequency When the estimated discharge temperature is high than 120°C, the compressor operational frequency will decrease by 8 Hz from the current operational frequency.
  • Page 120: Service Functions

    SERVICE FUNCTIONS MUH-07RV - MUX-10RV - MXZ-18RV - MU-07RV - MSC-07RV - MUH-09RV - MUX-18RV - MXZ-32RV - MU-09RV - MSC-09RV - MUH-12RV - MUX-24RV - MU-12RV - MSC-12RV - < > 12-1. COMPULSORY DEFROSTING MODE FOR SERVICE MUH-07/09/12RV By short circuit of the connector JP607 and R853 on the outdoor deicer P.C. board, defrosting mode can be accom- plished regardless of the defrost interval restriction.
  • Page 121 12-5. MU TYPE / MUH TYPE SWITCH OVER AND AUTO RESTART FUNCTION 1. MU TYPE / MUH TYPE SWITCH OVER SW2-1 sets the AUTO RESTART FUNCTION ON / OFF. The indoor units for MU type and MUH type are SW2-2 switches over the MU type/ MUH type. common specifications.
  • Page 122: Troubleshooting

    TROUBLESHOOTING MUH-07RV - MXZ-18RV - MSC-07RV - MU-07RV - MUH-09RV - MXZ-32RV - MU-09RV - MSC-09RV - MUH-12RV - MSC-12RV - MU-12RV - 13-1. Cautions on troubleshooting 1. Before troubleshooting, check the following: 1) Check the power supply voltage. 2) Check the indoor/outdoor connecting wire for mis-wiring.
  • Page 123 13-2. Instruction of troubleshooting <MU-07/09/12RV,MUH-07/09/12RV,MUX-10/18/24RV> (Refer to page 124 for MXZ-18/32RV) Start Indoor unit oper- OPERATION INDICATOR Indoor unit doesn’t Indoor unit doesn’t ates. Outdoor unit lamp on the indoor unit is receive the signal from receive the signal doesn’t operate. flashing on and off.
  • Page 124 <MXZ-18RV,MXZ32RV> The other cases Indoor unit dose not operate.(different modes ) • When you try to operate two or more indoor units with one outdoor unit simultaneously, one for the cooling and the other for heating, the operation mode of the indoor unit that operates earlier is selected. The other indoor units that will start the operation later cannot operate, indicating as shown in the figure below.
  • Page 125 13-3. troubleshooting check table <INDOOR UNIT> lighting Operation not lighting Indicator Before taking measures, make sure that the symptom reappears, for accurate troubleshooting. Self check table Abnormal Indication Symptom Detect method Check point point 0.5-second ON When serial signal stops for 4 to 5 seconds after 1st on of Mis-wiring Check switch SW2-2.(MU type or MUH...
  • Page 126 <OUTDOOR UNIT> (Only MXZ-18/32RV) (1) Troubleshooting table Note . LED indicates "00" in the normal status. 7-segment LED display Error mode Normal <MXZ-32RV> If there is defect in the following parts(electronic control P.C. board, relay P.C. board, high pressure switch- es(63H1,63H2),indoor /outdoor fan motor , or indoor coil thermistor), the compressor may stop even with the display remained at “...
  • Page 127 • Check the ball valve. d d 2 2 <Only MXZ-32RV> When the low pressure has been 0.05Mpa(0.5 kgf/cm -G) for 5 minutes • Check the pipes for bending or clogging Low pressure switch protec- or more, the compressor stops and restarts in 3 minutes. •...
  • Page 128 10-4. . Trouble criterion of main parts MSC-07RV - MSC-09RV - MSC-12RV - Check method and criterion Figure Part name Room Measure the resistance with a tester. temperature (Part temperature 10°C ~ 30°C) thermistor Abnormal Normal MSC-07/09/12RV Indoor coil Opened or...
  • Page 129 MUH-07RV - MU-07RV - MUH-09RV - MU-09RV - MUH-12RV - MU-12RV - Part name Check method and criterion Figure Measure the resistance with a tester. (Part temperature –10°C ~ 40°C) Defrost Normal Abnormal thermistor MUH-07/09/12RV Opened or short-circuited <MUH-07/09/12RV> 5kΩ ~ 60kΩ Measure the resistance between the terminals with a tester.
  • Page 130 MUX-10RV - MUX-18RV - MUX-24RV - Part name Check method and criterion Figure Measure the resistance between the terminals with a tester. (Coil wiring temperature-10°C ~ 40°C) Normal Abnormal MUX-10RV- Compressor MUX-24RV- MUX-18RV- KH-134VLL RH-174VGH RH-231VHA Opened or 4.1 ~ 5.0Ω 2.9 ~ 3.6Ω...
  • Page 131 MXZ-18RV - MXZ-32RV - Part name Check method and criterion Measure the resistance using a tester. Defrost thermistor (Part temperature -10°C ~ 40°C) Suction / Evaporation / Gas pipe temperature ther- Normal abnormal mistor 5kΩ ~ 55kΩ Opened or short-circuited Measure the resistance using a tester, after warming up the thermistor by holding by hand.
  • Page 132 Check of indoor fan motor Turn OFF the power supply. Indoor fan does not operate. Check connector CN211 visually. Are lead wires connected? Is soldered point normal? Reconnect the lead wires. Resolder it. Disconnect lead wires from connector CN211 on indoor electronic control P.C. board. Measure resistance between lead wires No.1 and No.3 and then No.2 and No.3.
  • Page 133 Check of indoor electronic control P.C. board The unit doesn’t operate with the remote controller. Also, the POWER MONITOR lamp doesn’t light up by pressing the EMERGENCY OPERATION switch. Check both “parts side” Turn OFF the power supply. and “pattern side” of indoor Remove indoor fan motor connector CN211 and vane motor connector CN151 electronic control P.C.
  • Page 134 Check of outdoor unit <MUH-07/09/12RV> Compressor and / or outdoor fan does not operate. Start Check the compressor Check the voltage to terminal block of and outdoor fan motor. Check the outdoor power supply, outdoor unit. Is there AC220~240V to See page 131.
  • Page 135 How to check mis-wiring and serial signal error (when outdoor unit does not work) 1 Set the switch(SW2-2) on indoor electronic control P.C. board to MU type, when the outdoor unit is MU type. If the setting is MUH type, the unit does not work. Start 2 Short circuit of JPG and JPS on the indoor electronic control P.C.
  • Page 136 Simple check methods for inverter/ compressor <MXZ-18/32RV> Start Disconnect the compressor lead wire. Unbalanced Infinite GCheck the resistance of F Check of open phase Replace the outdoor the transistor module. controll P.C. board. Balanced H Check of compressor Replace the transistor module and outdoor controll P.C.
  • Page 137 Check of compressor <MXZ-18/32RV> Start Short or ICheck the compressor open Replace the compressor winding on page 138. Normal 10 sec. J Check of compressor Stop J Check of compressor or less Replace compressor operation on page 138. operation on page 138. Continuous more than 10 sec.
  • Page 138 Check of outdoor thermistor <MXZ-18/32RV> (Simple check method for main components) Outdoor thermistor abnormality MXZ-18RV:Disconnect the connectors CN641, CN661 and CN681,CN682,CN683 from the outdoor controller. MXZ-32RV:Disconnect the connectors CN661, CN662 and CN663 from the outdoor controller. (Check the characteristic of thermistors.) Measure the resis- tance between pin3 and pin4 at...
  • Page 139 <MXZ-18/32RV> Check of outdoor fan motor The outdoor fan motor remains stopped. • First, measure the resistance of the 4-way valve coil to check the integrity. <MXZ-18RV> Disconnect CN63 TAB91 Outdoor control board or and outdoor electronic outdoor relay board defective. control P.C.board.
  • Page 140 Check of hi/ low pressure switch and compressor thermostat circuits <MXZ-18/32RV> No heating/cooling Compressor Causes •Three minutes after the thermistor (MXZ-32) High/low pressure switch, Open status unit stops, check that compressor or refrigerant Gas undercharged circuit defective. the high and low pressure Gas overcharged switch open and close Liner expansion valve...
  • Page 141 Check of mis-wiring or mis-piping <Only MXZ-32RV> Checking the mis-wiring and serial signal error (Only MXZ-32RV) <The outdoor unit does not operate.> Single or repeated blinks appears on the operation indicator (on the left-hand side). Using the light emitting diode LED1 on the indoor controller board (See the indoor unit service manual) , locate the defect in the following procedure.
  • Page 142 TEST POINT DIAGRAM AND VOLTAGE MSC-07RV - MSC-09RV - MSC-12RV - Indoor electronic control P.C. board Varistor (NR11) Fuse 250V AC 3.15A Indoor fan motor 220~240V AC R132 Power supply input 220-240V AC Room temperature 12V DC thermistor (RT11) Timer short...
  • Page 143 MUH-07RV - MUH-09RV - MUH-12RV - Outdoor deicer P.C. board R601 Reversing valve 5~10V DC Outdoor fan motor Power supply input coil 220-240V AC CN730 220-240V AC 220-240V AC Defrost thermistor(RT61) Fuse 2A/250V Defrost interval time short pin 5V DC 12V DC Jumper wire for change in defrost setting (JPC, JPE)
  • Page 144 MXZ-18RV - Outdoor unit electronic control P.C. board 2~3V DC 2~3V DC Power supply 12V DC input Power 330V DC supply Fuse 3A Electron expansion valve 12V DC pulse shape High-pressure Fin temperature switch short thermistor (Normal) (RT 63) Evaporation temperature thermistor Relay...
  • Page 145 MXZ-18RV - Relay P.C. board Short : Normal Open : Abnormal 220-240V AC Fuse 3.15A...
  • Page 146 Gas pipe temperature thermistor Fin temperature thermistor TEST POINT DIAGRAM AND VOLTAGE Evaporation temperature thermistor Suction temperature thermistor MXZ-32RV Defrost temperature thermistor Electronic control P.C.board Defrost temperature thermistor 2.5~4.0V DC Suction temperature thermistor 0.3~0.6V DC Temperature(;) Evaporation temperature thermistor Crank case heater 12V DC 2.5~4.0V DC Temperature(;) Outdoor fan ON 12V DC...
  • Page 147 Noise filter P.C.board 220V-240V AC OUTDOOR FAN OUTPUT 220V-240V AC 220V-240V AC INPUT CRANK CASE HEATER 220V-240V AC REVERSING VALVE 220V-240V AC 2 WAY VALVE 220V-240V AC I.P.M. P.C.board 12V DC 12V DC 320V DC Relay P.C.board 12V DC High pressure switch 12V DC Short...
  • Page 148: Disassembly Instructions

    1Slide the sleeve. 1Hold the sleeve, and 2Pull the terminal while pull out the terminal pushing the locking slowly. lever. 14-1. MSC-07RV - MSC-09RV - MSC-12RV - INDOOR UNIT OPERATING PROCEDURE PHOTOS 1. Removing the front panel (1) Remove the screws caps of the front panel.
  • Page 149 OPERATING PROCEDURE PHOTOS 3. Removing the electrical box Photo 3 (1) Remove the front panel. (Refer to 1) (2) Remove the electrical cover. (3) Disconnect the connector of the indoor coil thermistor. (4) Disconnect the motor connector (CN211) and the vane motor connector (CN151) on the electronic control P.C.
  • Page 150 14-2. MU-07RV - MU-09RV - MU-12RV - OUTDOOR UNIT OPERATING PROCEDURE PHOTOS 1. Removing the cabinet Photo 1 (1) Remove the screws for the top panel. Screws for front panel and motor support (2) Remove the screw for the service panel. (3) Remove the screws for the cabinet.
  • Page 151 OPERATING PROCEDURE PHOTOS Photo 5 3. Removing the propeller fan and the outdoor fan motor Lead clamps (1) Remove the cabinet. (Refer to 1.) Set screws for (2) Remove the propeller fan nut. Outdoor outdoor fan motor Hook (3) Remove the propeller fan. fan motor NOTE : Loose the propeller fan in the rotating direction for connector...
  • Page 152 14-3. MUH-07RV - MUH-09RV - MUH-12RV - OUTDOOR UNIT OPERATING PROCEDURE PHOTOS 1. Removing the cabinet Photo 1 (1) Remove the screws for the top panel. Screws for front panel and motor support (2) Remove the screw for the service panel. (3) Remove the screws for the cabinet.
  • Page 153 OPERATING PROCEDURE PHOTOS Photo 5 3. Removing the propeller fan and the outdoor fan motor Lead clamps Set screws for (1) Remove the cabinet. (Refer to 1.) outdoor fan motor (2) Remove the propeller fan nut. Outdoor Hook (3) Remove the propeller fan. fan motor Propeller fan NOTE : Loose the propeller fan in the rotating direction for...
  • Page 154 14-4 MUX-10RV - OUTDOOR UNIT OPERATING PROCEDURE PHOTOS 1. Removing the cabinet. Photo 1 (1) Remove the screws fixing the service panel. (2) Remove the screw fixing the side panel. (3) Remove the service panel. Screws (4) Remove the side panel. (5) Remove the cabinet.
  • Page 155 OPERATING PROCEDURE PHOTOS 4. Removing the compressor. Photo 5 (1) Remove the cabinet. (Refer to 1.) (2) Remove the terminal cover. (3) Pull out lead from the compressor terminal, then remove the thermal protector. (4) Remove the suction pipe welded section and discharge pipe welded section using a burner.
  • Page 156 14-5 MUX-18RV - OUTDOOR UNIT OPERATING PROCEDURE PHOTOS 1.Removing the cabinet. (1) Remove the screws fixing the service panel. Photo 1 (2) Remove the screw fixing the side panel. Cabinet Service panel (3) Remove the service panel. (4) Remove the side panel. (5) Remove the cabinet.
  • Page 157 PHOTOS OPERATING PROCEDURE 4. Removing the compressor. (1) Remove the cabinet.(Refer to 1.) Photo 4 (2) Remove the terminal cover. (3) Pull out lead from the compressor terminal,then remove the terminal overcurrent relay. (4) Remove the suction pipe welded section and discharge pipe welded section using a burner.
  • Page 158 14-6 MUX-24RV- OUTDOOR UNIT OPERATING PROCEDURE PHOTOS Photo 1 Top panel 1.Removing the cabinet. (1) Remove the screws fixing the service panel. (2) Remove the screw fixing the top panel. Screws (3) Remove the service panel. (4) Remove the top panel. (5) Remove the screws fixing the front panel.
  • Page 159 OPERATING PROCEDURE PHOTOS 2. Removing the relay panel. Photo 4 Solenoid coil connector Solenoid coil connector (21RA,21RB) (21R1,21R2,21R3,21R4) (1) Remove the cabinet. (Refer to 1) (2) Disconnect the following connectors. . Compressor (MC1,MC2) . Outdoor fan motor . Solenoid coil (21R1,21R2,21R3,21R4,21RA,21RB) Compressor connector (MC1,MC2) Screws...
  • Page 160 OPERATING PROCEDURE PHOTOS 5. Removing the compressor. (A,B) Photo 7 (1) Remove the cabinet. (Refer to 1) Terminal cover (2) Remove the relay panel. (Refer to 2) (3) Remove the terminal cover. (4) Pull out lead from the compressor. (5) Remove the suction pipe welded section and discharge pipe welded section using a burner.
  • Page 161 14-7 MXZ-18RV - OUTDOOR UNIT OPERATING PROCEDURE PHOTOS Removing the compressor Photo 1 Top panel (1) Remove the top panel. (2) Remove the service panel and release the gas. Rear panel (3) Remove the rear panel, and front panel. (4) Disconnect the compressor linking connector. (See Photo (5) Disconnect the following connectors from the outdoor elec- Service Front panel...
  • Page 162 OPERATING PROCEDURE PHOTOS Removing the outdoor fan motor Photo 4 (1) Remove the top panel, service panel, and front panel. (2) Disconnect the connector CN63,TAB91 from the outdoor electronic control P.C. board. (3) Remove the propeller. (4) Remove the outdoor fan motor. Fan motor Propeller...
  • Page 163 14-7 MXZ-32RV - OUTDOOR UNIT OPERATING PROCEDURE PHOTOS 1.Removing the compressor Photo 1 (1)Remove the screws fo the service panel, and remove it. Release refrigerant gas. (2)Remove the screws of the top panel , and remove it. Top panel (3)Remove the screws of the front panel , and remove it. (4)Disconnect the compressor lead wire.(TAB64,TAB65,TAB66) (5)Disconnect the ourdoor controller board connectors CN791, CN792, CN723, CN722,CN662, and CN661.Disconnect the...
  • Page 164 OPERATING PROCEDURE PHOTOS 2.Removing the fan motor (1)Remove the top panel(five screws),the service panel(four screws),and the front panel (two screws).(See Photo 1.) (2)Disconnect the connector CN911 on the outdoor controller board. (3)Remove the propeller. (4)Remove the fan motor. 3.Removing the 4-way valve Photo 4 (1)Remove the screws of the top panel , and remove it.(See Photo 1.)
  • Page 165 OPERATING PROCEDURE PHOTOS 5.Removing the reactor (1)Remove the five screws of the top panel , and remove it.(See Photo 6 Photo 1.) (2)Disconnect the reactor lead wire. Reactor (3)Remove the two screws of the reactor , and take it out.
  • Page 166: Parts List

    PARTS LIST MSC-07RV - (WH) MSC-09RV - (WH) MSC-12RV - (WH) 15-2. ACCESSORY PART 15-1. INDOOR UNIT STRUCTURAL PARTS 4 (W) (See page 184.) (See page 184.) 3 (W) (W)These figures show about MSC-12RV. 15-1.INDOOR UNIT STRUCTURAL PARTS Q'ty/unit Symbol Part No.
  • Page 167 MSC-07RV - (WH) MSC-09RV - (WH) MSC-12RV - (WH) 15-4. INDOOR UNIT HEAT EXCHANGER 15-3. INDOOR UNIT ELECTRICAL PARTS 19 (W) SLEEVE BEARING ROOM TEMPERATURE THERMISTOR FUSE VARISTOR (W)These figures show about MSC-12RV. 15-3. INDOOR UNIT ELECTRICAL PARTS Symbol Q'ty/unit in Wiring Part No.
  • Page 168 15-5. OUTDOOR UNIT STRUCTURAL PARTS MU-07RV - MU-09RV - MU-12RV - Part number that is circled is not shown in the illustration. Q'ty/unit Symbol in Wiring Remarks Part name Part No. MU-07RV- MU-12RV- MU-09RV- Diagram E02 336 232 CABINET E02 336 297 TOP PANEL E02 336 521 GRILLE(OUT)
  • Page 169 MU-07RV - MU-09RV - MU-12RV - 15-7. REMOTE CONTROLLER 15-6. OUTDOOR UNIT FUNCTIONAL PARTS AND ELECTRICAL PARTS 15-6. OUTDOOR UNIT FUNCTIONAL PARTS AND ELECTRICAL PARTS Part number that are circled are not shown in the illustration. Q'ty/unit Symbol Part No. in Wiring Remarks Part name...
  • Page 170 15-8. OUTDOOR UNIT STRUCTURAL PARTS MUH-07RV - MUH-09RV - MUH-12RV - Part number that are circled are not shown in the illustration. Q'ty/unit Symbol in Wiring Remarks Part name Part No. MUH-07RV- MUH-12RV- MUH-09RV- Diagram E02 336 232 CABINET E02 336 297 TOP PANEL E02 336 521 GRILLE(OUT)
  • Page 171 MUH-07RV - MUH-09RV - MUH-12RV - 15-10. REMOTE CONTROLLER 15-9. OUTDOOR UNIT FUNCTIONAL PARTS AND ELECTRICAL PARTS 15-11. ACCESSORY PARTS 15-9. OUTDOOR UNIT FUNCTIONAL PARTS AND ELECTRICAL PARTS Part number that are circled are not shown in the illustration. Q'ty/unit Symbol Part No.
  • Page 172 MUX-10RV - 15-12. OUTDOOR UNIT 15-13. REMOTE CONTROLLER FUNCTIONAL PARTS AND ELECTRICAL PARTS 15-12. OUTDOOR UNIT FUNCTIONAL PARTS AND ELECTRICAL PARTS Part number that is circled are not shown in the illustration. Q'ty / unit Symbol in Wiring Parts No. Parts Name Remarks MUX-10RV-...
  • Page 173 15-14. OUTDOOR UNIT STRUCTURAL PARTS MUX-10RV - Q'ty / unit Symbol in Wiring Parts No. Parts Name Remarks MUX-10RV- Diagram T2W 418 521 OUTER NOZZLE T2W E03 232 CABINET M21 478 297 TOP PANEL T2W 459 630 OUTDOOR HEAT EXCHANGER T2W 416 515 MOTOR SUPPORT T2W E03 293...
  • Page 174 15-15. OUTDOOR UNIT FUNCTIONAL PARTS AND AND ELECTRICAL PARTS AND STRUCTURAL PARTS MUX-18RV - 11 10 7 28 17 16 15-16. REMOTE CONTROLLER...
  • Page 175 MUX-18RV - 15-15. OUTDOOR UNIT FUNCTIONAL PARTS AND AND ELECTRICAL PARTS AND STRUCTURAL PARTS Part number that is circled are not shown in the illustration. Q'ty / set Symbol in Wiring Parts No. Parts Name Remarks MUX-18RV- E1 Diagram T2W 510 232 CABINET M21 B57 249 SIDE PANEL...
  • Page 176 15-17. OUTDOOR UNIT 15-18. REMOTE CONTROLLER FUNCTIONAL PARTS AND AND ELECTRICAL PARTS MUX-24RV - 15-17. OUTDOOR UNIT FUNCTIONAL PARTS AND AND ELECTRICAL PARTS Part number that is circled is not shown in the illustration. Symbol Q'ty / unit in Wiring Parts No.
  • Page 177 15-19. OUTDOOR UNIT STRUCTURAL PARTS MUX-24RV - 20 21 15 16 Part number that are circled is not shown in the illustration. Symbol Q'ty / unit in Wiring Parts No. Parts Name Remarks MUX-24RV- Diagram T2W E44 232 FRONT PANEL T2W E44 521 OUTER NOZZLE T2W E44 245...
  • Page 178 15-20. OUTDOOR UNIT STRUCTURAL PARTS MXZ-18RV - Symbol Q'ty / unit Parts No. Parts Name in Wiring Remarks MXZ-18RV- Diagram M21 LL4 232 FRONT PANEL M21 LL4 521 FAN GUARD M21 LL4 297 TOP PANEL M21 LL4 245 SERVICE PANEL R01 A00 662 SIDE PANEL M21 LL4 248...
  • Page 179 15-21. OUTDOOR UNIT FUNCTURAL PARTS MXZ-18RV - Part number that are circed are not shown in the illustration. Symbol Q'ty / unit Parts No. Parts Name in Wiring Remarks MXZ-18RV- Diagram M21 LL4 501 PROPELLER FAN T2W E41 301 RA6V50- OUTDOOR FAN MOTOR M21 LL4 488 LEV.
  • Page 180 15-22. OUTDOOR UNIT ELECTRICAL PARTS MXZ-18RV - Part number that are circed are not shown in the illustration. Symbol Q'ty / unit Parts No. Parts Name in Wiring Remarks MXZ-18RV- E1 Diagram M21 A19 447 DS63 DIODE MODULE M21 U48 362 CURRENT DETECTING RESISTOR T2W E22 341 DS61...
  • Page 181 15-23. OUTDOOR UNIT STRUCTURAL PARTS MXZ-32RV - Part number that is circled are not shown in the illustration. Symbol Q'ty / unit Parts No. Parts Name in Wiring Remarks MXZ-32RV- Diagram M21 17A 501 PROPELLER FAN T2W E40 301 MF61 OUTDOOR FAN MOTOR T2W E40 452 IPM P.C.
  • Page 182 15-24. OUTDOOR UNIT FUNCTIONAL PARTS MXZ-32RV - Part number that is circled are not shown in the illustration. Symbol Q'ty / unit Parts No. Parts Name in Wiring Remarks MXZ-32RV- Diagram M21 17A 232 FRONT PANLE M21 17A 245 SERVICE PANEL M21 17A 249 SIDE PANEL M21 17A 297...
  • Page 183 MXZ-18RV - MXZ-32RV - 15-25. REMOTE CONTROLLER 15-26. ACCESSORY PARTS 15-25. REMOTE CONTROLLER Symbol Q'ty / unit Parts No. Parts Name in Wiring MXZ-18RV MXZ-32RV Remarks Diagram M21 LL4 501 REMOTE CONTROLLER 15-26. ACCESSORY PARTS DRAIN SOCKET O1 T2W E59 704 DRAIN SOCKET ASSEMBLY DRAIN CAP O2...
  • Page 184: Optional Parts

    Clogged AIR CLEANING FILTER may reduce the air conditioner capacity or cause frost on the air outlet. DO NOT reuse AIR CLEANING FILTER even if it is washed. DO NOT remove or attach AIR CLEANING FILTER during unit operation. Model Part No. MSC-07RV- MSC-09RV- MAC-1300FT MSC-12RV- 16-2. DEODORIZING FILTER DEODORIZING FILTER removes ammonia and hydrogen sulphide emitted from tobacco, and odors of pets.
  • Page 185 16-4. Outlet guide Changes air discharge direction. Applied unit Model name Model code MXZ-18RV PAC-292SG — MXZ-32RV MAC-855SG 51H-855 610.4 5 - [6 109.4 Punxhed hole 51.8 4x ø6-holes 52.5 5 - [6 Punxhed hole MAC-855SG PAC-292SG...
  • Page 186 HEAD OFFICE MITSUBISHI DENKI BLDG.MARUNOUCHI TOKYO100-8310 TELEX J24532 CABLE MELCO TOKYO C C Copyright 1999 MITSUBISHI ELECTRIC ENGINEERING CO.,LTD Issued in Apr. 1999. No.OB227 REVISED EDITION-B 245 Issued in Apr. 1999. No.OB227 REVISED EDITION-A 50 New publication, effective Apr. 1999 Issued in Dec.

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